RESPONS PERTUMBUHAN TANAMAN DAN KONSENTRASI RANTAI PANJANG POLYISOPRENOID TERHADAP VARIASI NAUNGAN DAN SALINITAS PADA MANGROVE SONNERATIA ALBA SMITH.
ABSTRACT: Mangroves has a
special ability to adapt with extreme environmental conditions. This condition
allows mangroves to produce secondary metabolites as chemical defenses for
their sustainability. Polyisoprenoid is one of the secondary metabolites which
unknown function. The purpose of this study is to analyze the growth of S. alba
seedling in responsse to shade variations and salinity concentration and its
influence on the concentration of long-chain polyisoprenoid. The research was
conducted from August to December 2014 using Factorial Completely Randomized
design with shade treatment of 0%, 25%, 50%, and 75% along with salinity levels
of 0%, 1.5% and 3%. Analysis of non-saponifiable lipid content and
polyisoprenoid was done by comparing the leaves and roots of S. alba seedlings
in variation 0% shade and 3% with salinity variations and in 75% shade with 3%
salinity. The results showed that growth of S. alba seedling was optimum
variation of 0% shade and 3% salinity showing 100% growth, 2.6 cm height, 0.17
mm diameter, 0.113 g fresh weight root, 0, 08 g dry weight root, 0.15 g wet
weight shoot, 0.05 g dry weight shoot, 4 leaves number and ratio shoot and
roots was 0.59. Polyisoprenoid content obtained at 190,5 ml in leaves an 133,4
ml in roots from variation 0% shade and with 3% salinity but in 75% shade with
3% salinity at 185,2 ml in leaves and 231,9 ml in roots. Polyisoprenoid may play an important
role in adapting the availability light intensity, which polyisoprenoid concentration
increased with reducing light intensity on S. alba seedlings.
Penulis: Evan Kharogi
Sinulingga, Mohammad Basyuni, Yunasfi
Kode Jurnal: jpkehutanandd150271
